1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 */
9
10 #include "baside2.hxx"
11
12 #include <vcl/event.hxx>
13 #include <vcl/textview.hxx>
14 #include <vcl/xtextedt.hxx>
15 #include <vcl/settings.hxx>
16
17 namespace basctl
18 {
LineNumberWindow(vcl::Window * pParent,ModulWindow * pModulWindow)19 LineNumberWindow::LineNumberWindow(vcl::Window* pParent, ModulWindow* pModulWindow)
20 : Window(pParent, WB_BORDER)
21 , m_pModulWindow(pModulWindow)
22 , m_nCurYOffset(0)
23 {
24 SetBackground(Wallpaper(GetSettings().GetStyleSettings().GetFieldColor()));
25 m_nBaseWidth = GetTextWidth("8");
26 m_nWidth = m_nBaseWidth * 3 + m_nBaseWidth / 2;
27 }
28
~LineNumberWindow()29 LineNumberWindow::~LineNumberWindow() { disposeOnce(); }
30
dispose()31 void LineNumberWindow::dispose()
32 {
33 m_pModulWindow.clear();
34 Window::dispose();
35 }
36
Paint(vcl::RenderContext & rRenderContext,const tools::Rectangle &)37 void LineNumberWindow::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle&)
38 {
39 if (SyncYOffset())
40 return;
41
42 ExtTextEngine* txtEngine = m_pModulWindow->GetEditEngine();
43 if (!txtEngine)
44 return;
45
46 TextView* txtView = m_pModulWindow->GetEditView();
47 if (!txtView)
48 return;
49
50 GetParent()->Resize();
51
52 int windowHeight = rRenderContext.GetOutputSize().Height();
53 int nLineHeight = rRenderContext.GetTextHeight();
54 if (!nLineHeight)
55 {
56 return;
57 }
58
59 int startY = txtView->GetStartDocPos().Y();
60 const sal_uInt32 nStartLine = startY / nLineHeight + 1;
61 sal_uInt32 nEndLine = (startY + windowHeight) / nLineHeight + 1;
62
63 if (txtEngine->GetParagraphCount() + 1 < nEndLine)
64 nEndLine = txtEngine->GetParagraphCount() + 1;
65
66 // FIXME: it would be best if we could get notified of a font change
67 // rather than doing that re-calculation at each Paint event
68 m_nBaseWidth = GetTextWidth("8");
69
70 // reserve enough for 3 digit minimum, with a bit to spare for comfort
71 m_nWidth = m_nBaseWidth * 3 + m_nBaseWidth / 2;
72 auto nMaxLineNumber = std::max(nEndLine, txtEngine->GetParagraphCount() + 1);
73 sal_uInt32 i = (nMaxLineNumber + 1) / 1000;
74 while (i)
75 {
76 i /= 10;
77 m_nWidth += m_nBaseWidth;
78 }
79
80 sal_Int64 y = (nStartLine - 1) * static_cast<sal_Int64>(nLineHeight);
81 for (sal_uInt32 n = nStartLine; n <= nEndLine; ++n, y += nLineHeight)
82 rRenderContext.DrawText(Point(0, y - m_nCurYOffset), OUString::number(n));
83 }
84
DataChanged(DataChangedEvent const & rDCEvt)85 void LineNumberWindow::DataChanged(DataChangedEvent const& rDCEvt)
86 {
87 Window::DataChanged(rDCEvt);
88 if (rDCEvt.GetType() == DataChangedEventType::SETTINGS
89 && (rDCEvt.GetFlags() & AllSettingsFlags::STYLE))
90 {
91 Color aColor(GetSettings().GetStyleSettings().GetFieldColor());
92 const AllSettings* pOldSettings = rDCEvt.GetOldSettings();
93 if (!pOldSettings || aColor != pOldSettings->GetStyleSettings().GetFieldColor())
94 {
95 SetBackground(Wallpaper(aColor));
96 Invalidate();
97 }
98 }
99 }
100
DoScroll(tools::Long nVertScroll)101 void LineNumberWindow::DoScroll(tools::Long nVertScroll)
102 {
103 m_nCurYOffset -= nVertScroll;
104 Window::Scroll(0, nVertScroll);
105 }
106
SyncYOffset()107 bool LineNumberWindow::SyncYOffset()
108 {
109 TextView* pView = m_pModulWindow->GetEditView();
110 if (!pView)
111 return false;
112
113 tools::Long nViewYOffset = pView->GetStartDocPos().Y();
114 if (m_nCurYOffset == nViewYOffset)
115 return false;
116
117 m_nCurYOffset = nViewYOffset;
118 Invalidate();
119 return true;
120 }
121
122 } // namespace basctl
123
124 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
125